Question

friends please answer this question........please ​

Answer 1

Answer:

4

Explanation:

V= 72 km/ hr = 20m/s

U= 0 m/s

S= 10 m

T= 10/20 sec = 1/2

a = 40 ms^-2

M = 100 kg

F = 4000 N

Spring constant = 4000/1000

= 4

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